LOG4J generates a log file name with a date

Use log4j to generate logs, worry about for a long time if generated into a file inside there is very large, consider daily generated log files, the file name has the date of the day.

The solution is simple:

Log4j.appender.file=org.apache.log4j.dailyrollingfileappender
#log4j. Appender.file.file=hibernate.log
Log4j.appender.file.file=.. /webapps/bjjjpcdemo/logs/log_
Log4j.appender.file.datepattern=yyyy-mm-dd '. html '
Log4j.appender.file.layout=org.apache.log4j.patternlayout
Log4j.appender.file.layout.conversionpattern=[framework]%d-%c-%-4r [%t]%-5p%c%x-%m%n

But in the test when how also do not want to like "log_20090625.html" such a log file, always only a "log_" file, after the Internet to find out the information, 25th (today) generated by the log is "Log_" in the form of storage, When the 26th (tomorrow) is the 25th generated Log_ file added to the date of 25th (log_20090625.html) to save, and then create a 26th Log_ file, and so on.

So you need to modify the system time to see the generated log at the time of the test.